Accurate and high-precision measurement of lithium isotopes in two reference materials by MC-ICP-MS

被引：171

作者：

Millot, R

Guerrot, C

Vigier, N

机构：

[1] Bur Rech Geol & Minieres, Anal & Mineral Characterisat Dept, F-45060 Orleans 2, France

[2] Open Univ, Dept Earth Sci, Milton Keynes MK7 6AA, Bucks, England

[3] CNRS, CRPG, F-54501 Vandoeuvre Les Nancy, France

来源：

GEOSTANDARDS AND GEOANALYTICAL RESEARCH | 2004年 / 28卷 / 01期

关键词：

lithium isotopes; standard solution; MC-ICP-MS; IRMM-016; seawater; IRMM BCR-403;

D O I：

10.1111/j.1751-908X.2004.tb01052.x

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

We report here a newly developed method for measurement of Li isotopes by use of multi-collector ICP-MS (Neptune) allowing rapid and high precision determination of Li isotope ratios at low levels of lithium (15-20 ng). The lithium reference sample solution IRMM-016 was analysed over a period of ten months with an external reproducibility of 0.24parts per thousand (2s, n = 52). Chemical separation of Li from matrix was performed on the seawater sample IRMM BCR-403, for which a mean delta(7)Li value of + 31.0 +/- 0. 1parts per thousand (2s/rootn, n = 31) was obtained. This mean value is in good agreement with those previously published for other seawater samples. BCR-403 seawater being readily available, we propose that this seawater sample be used as a reference sample for Li isotope measurements.

引用

页码：153 / 159

页数：7

共 27 条

[1]

[Anonymous], 2002, COMPILATION MINIMUM, DOI DOI 10.3133/WRI014222

[2]

BOUMAN C, 2002, DETERMINATION LITHIU

[3] Impact of matrix effects on the accurate measurement of Li isotope ratios by inductively coupled plasma mass spectrometry (MC-ICP-MS) under "cold" plasma conditions [J].